What is the difference between active noise cancelling and passive isolation?

Passive isolation is just the shape of the headphone: in-ear tips or over-ear pads physically block sound. Active noise cancelling (ANC) also listens to your surroundings through microphones and generates an opposing wave, so it works best on steady drone — a plane, a bus, ventilation. ANC does very little against sudden sounds such as speech.

How long do wireless earbuds really last on one charge?

In-ear buds usually play for 4–8 hours, and the case adds another two to four full charges. Over-ear headphones last 20–40 hours. High volume, ANC and cold weather all cut into that — in winter expect roughly a fifth less.

Can I use one pair with both my phone and my computer?

Yes, if the headphones support multipoint: they stay connected to two devices at once and switch by themselves when a call starts on the computer. Without multipoint you have to disconnect one device manually every time.

Landscape Speakers, 20W, 4'' Two-Way, Black (Pair)

Description

4'' Coaxial Satellite Landscape Speakers (Pair) An increasing number of sound systems are being adapted for outdoor use. The 4" coaxial outdoor speaker delivers consistent audio performance and is engineered to withstand even the harshest environmental conditions. Its compact enclosure allows seamless integration into gardens, patios, terraces, or poolside areas without compromising the surrounding aesthetics. With impressive low-frequency response and high sound quality, this speaker provides smooth, wide-dispersion audio suitable for both background listening and outdoor movie experiences.

Features:

Fantastic Full Range Sound: offers excellent listening experience. Silk Dome Tweeter: for smooth treble, wide dispersion, and accurate imaging. Polypropylene Woofer: maintains a uniform dispersion pattern at all frequencies in its range and produces a cleaner sound to the listener. Dustproof and Water-Resistant IP Rated Design: well suited to high humidity areas such as bathrooms and outdoor patios. Swivels and positions easily for optimal listening experience. Audiophile Quality Matte Finish Enclosure: for high tech look and feel.

Specifications:

RMS Power: 20W. Frequency Response: 120Hz-20kHz. Sensitivity (1M/1W): 83dB. Nominal Impedance: 8Ohm. Transformer: C70V: 1.25W-2.5W-5W-10W-NC & 8Ohm, C100V: 2.5W-5W-10W-20W-NC & 8Ohm. Woofer Size: 4". Tweeter Size: 0.75". Woofer Type: Polypropylene cone. Tweeter Type: Silk dome. Audio Input: Phoenix Type Pluggable Terminal Block. Magnetic: yes. Woofer Quantity: 1. Tweeter Quantity: 1. Safety class: IP66. Grill Type: Round grill. Cabinet Material: ABS. Weight: 3.1kg (6.8lbs). Cabinet Size: 138x138x190mm (5.4"x5.4"x7.5"). Color: black.

Warranty:

24 months.